Canonbury Antiques has dated this Longines Marine Chronometer Clock to the 1920s.

Dial & Features
The white enamel dial is clean and crisp, marked:
LONGINES at 12 o’clock
“Chronometer”
Arabic numerals in bold black type
Blued steel spade hands
Subsidiary seconds dial at 6 o’clock The dial layout and typography are characteristic of 1930s–1950s Longines navigational instruments, produced for commercial marine service rather than naval Admiralty contracts

Compagnie des Montres Longines, Francillon S.A. - or simply Longines - is a Swiss luxury watchmaker based in Saint-Imier, Switzerland. Movement & Suspension
The gimbal arms and locking mechanism appear intact, with original brass hardware showing good aged patination Mahogany Case

The box is crafted in solid mahogany with dovetailing at the corners, brass stop-hinges, and a front lock (key not visible). The interior of the lid shows remnants of the original instruction or maker’s label, now largely lost but still visible in outline — a common occurrence in working chronometers.
We ship to every corner of the planet - including the USA - please get in touch for a shipping quote
Dimensions:
Width x Depth x Height
6" (15cm) x 6" (15cm) x 5" (13cm)
Canonbury Antiques has dated this Longines Marine Chronometer Clock to the 1920s.
London UK antiques & decorative arts - ships globally
You can view the stock and full dealer information on the Canonbury Antiques Profile Page